Our dataset labels comprise a broad distribution of building sizes, as shown in Figure REF A. Compared to natural image datasets, our dataset more heavily emphasizes small objects, with the majority of objects less than 700 pixels in area, or \(\sim 25\)  pixels across. By contrast, objects in the PASCALVOC [1]} or MSCOCO [2]} datasets usually comprise 50-300 pixels along the major axis [3]}.
